After a practice or a workout or a game, they flock to their lockers and grab for their phones. What happened when I was (heaven forbid) momentarily not on the grid? Who left a text? Who tweeted what? What did I miss?

WHAT DID I MISS?

Players are people, too, generally fairly young people, and that means they’ve lived with a device in their hand that instantly brings them the world, literally at their fingertips.

Eli Manning sees this, of course, but he does not partake in it, not now, not ever. Not interested.

“I’m definitely not on social media,’’ Manning told The Post. “Don’t know much about it, just not for me.’’

As the roster is assembled around him, time marches on for old-man Eli. He is entering his 12th year at this, heading into a season with much of the weight of the Giants’ season sitting squarely on his shoulders. At 34, he is the oldest non-kicker (Josh Brown is 36) on the team — 17 days older than defensive lineman Cullen Jenkins.

After cut-down day, the Giants have 10 players on their roster who’ve reached 30 years of age. Manning in some ways still looks boyish with his (at times) tousled hair and, every few days, sort-of beard/facial hair display, about as renegade as he gets. His footwork is more elusive than 10 years earlier, a product of diligent training, and his arm this summer was rocket-like, although perhaps a bit scattershot in the preseason games.

Manning is not all-business but he’s mostly business and he’s an anomaly in that he does not care what you think and really doesn’t think you should care what he thinks. In that regard, he does not “get’’ the millennial generation he’s surrounded by, young guys constantly expressing the need to, well, express.

Odell Beckham Jr. with Eli ManningAP

“I think if you listen to everything everybody says about you it’s probably not a good thing, whether they’re saying good things or negative things,’’ Manning said. “No point in worrying about that. I’m not going to be the guy who feels he has to comment about everything that I see, whether someone makes a great play or a terrible play or does something good or does something bad. It’s not me to judge that.

“I’m not going to take the time to be on my phone. Usually when I’m at home, I try to avoid the phone, I try to be with my family and have a conversation with the people around me rather than trying to communicate with a bunch of people I don’t know.’’

He admits he is not “a texting-conversation guy,’’ preferring old-school phone conversations. Left to himself, he has no clue what is going on in the Twitter world and no desire to find out what he is missing. He is running the race wearing blinders, oblivious to the noise and clutter.

Manning enjoyed watching “The Office’’ and got into “Homeland’’ and “Breaking Bad.’’ But he saw no reason to share his viewing experience in a community chat.

Another attempt at breaking the Eli fortress of solitude: What about the celebrity interaction? When Odell Beckham Jr. made his now-famous one-handed catch against the Cowboys, LeBron James saluted him on Twitter. Beckham was floored. The two eventually met, in person, all put in motion by a tweet.

It became a story.

“Sure,’’ Manning said, clearly not impressed. “I don’t know if it’s a good story, but I guess it’s a story, right? Whether it’s a meaningful story or a story I want to read about, I don’t know. There’s lots of stories I guess.’’

Well, it was a story for Odell.

“Good for him,’’ Manning said.

Sensing he was coming off too condescending or too much like a “Get off-my-lawn’’ grump, Manning acknowledged teammates 10 or 12 years younger than him are entitled to their obsessions.

“I’m not bashing it, I’m not saying there’s anything wrong with it,’’ Eli said. “If I was 23, I’d probably be in on it also. It’s just the time and what people are on and how you get your information. Hey, there may be a time and place where I learn about it and say ‘Hey, it might be meaningful to be on Twitter to get your information.’

“But I don’t think I’m going to be the guy tweeting — I’m just not a ‘comment’ guy. If someone makes a good play, I might recognize it, but I don’t feel I have to comment to the world congratulating or saying anything good or bad.’’